Permanent deformation analysis of HMA mixtures using simple performance tests

Document Type

Conference Proceeding

Publication Date

12-1-2008

Abstract

The objective of this study was to evaluate the permanent deformation of Hot Mix Asphalt (HMA) mixtures based on two simple performance tests (dynamic modulus |E*|, flow number FN) and a Loaded Wheel Tracking test (LWT, Hamburg-type). Four plant-produced HMA mixtures were selected in this study. Those mixtures included two levels of nominal maximum aggregate size (12.5- and 25.0-mm) and two levels of mixture type (Superpave and SMA). Test results indicated that the |E*| values were sensitive to the nominal maximum aggregate size. Larger aggregates tended to have higher |E*| values at high temperatures. Furthermore, the ranking of the mixtures evaluated from the flow number tests was consistent with their use in the field. In addition, good correlation was observed between the results from the flow number and loaded wheel tracking tests. © 2008 Taylor & Francis Group, London.

Publication Source (Journal or Book title)

Efficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling - Proceedings of the 4th International Gulf Conference on Roads

First Page

601

Last Page

610

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